Improve handling of some thread interruptions

server/sonar-process-monitor/src/main/java/org/sonar/process/monitor/StreamGobbler.java

@@ -68,7 +68,8 @@ class StreamGobbler extends Thread {
       try {
         gobbler.join();
       } catch (InterruptedException ignored) {
-        // consider as finished
+        // consider as finished, restore the interrupted flag
+        Thread.currentThread().interrupt();
       }
     }
   }

server/sonar-process/src/main/java/org/sonar/process/ProcessEntryPoint.java

@@ -135,7 +135,7 @@ public class ProcessEntryPoint implements Stoppable {
       stopperThread.join();
       lifecycle.tryToMoveTo(Lifecycle.State.STOPPED);
     } catch (InterruptedException e) {
-      // nothing to do, the process is going to be exited
+      Thread.currentThread().interrupt();
     }
     exit.exit(0);
   }

server/sonar-process/src/main/java/org/sonar/process/StopWatcher.java

@@ -56,6 +56,8 @@ public class StopWatcher extends Thread {
             Thread.sleep(delayMs);
           } catch (InterruptedException ignored) {
             watching = false;
+            // restore interrupted flag
+            Thread.currentThread().interrupt();
           }
         }
       }

server/sonar-search/src/main/java/org/sonar/search/SearchServer.java

@@ -66,12 +66,13 @@ public class SearchServer implements Monitored {
 
   @Override
   public void awaitStop() {
-    while (node != null && !node.isClosed()) {
-      try {
+    try {
+      while (node != null && !node.isClosed()) {
         Thread.sleep(200L);
-      } catch (InterruptedException e) {
-        // Ignore
       }
+    } catch (InterruptedException e) {
+      // Restore the interrupted status
+      Thread.currentThread().interrupt();
     }
   }
 

sonar-plugin-api/src/main/java/org/sonar/api/utils/command/CommandExecutor.java

@@ -147,7 +147,8 @@ public class CommandExecutor {
       try {
         thread.join();
       } catch (InterruptedException e) {
-        LOG.error("InterruptedException while waiting finish of " + thread.toString(), e);
+        // considered as finished, restore the interrupted flag
+        Thread.currentThread().interrupt();
       }
     }
   }